Buggy code:
public String getUndoItemType ( ) { } public void setUndoItemType ( String undoItemType ) { } public String getEquationNames ( ) { } public void setEquationNames ( String equationNames ) { } public int getOldSortColumnIndex ( ) { } public void setOldSortColumnIndex ( int oldSortColumnIndex ) { } public int getNewSortColumnIndex ( ) { } public void setNewSortColumnIndex ( int newSortColumnIndex ) { } public SortOrder getOldSortOrder ( ) { } public void setOldSortOrder ( SortOrder oldSortOrder ) { } public SortOrder getNewSortOrder ( ) { } public void setNewSortOrder ( SortOrder newSortOrder ) { } public int getAddedColumnIndex ( ) { } public void setAddedColumnIndex ( int addedColumnIndex ) { } public int getDeletedColumnIndex ( ) { } public void setDeletedColumnIndex ( int deletedColumnIndex ) { } public ArrayList < Integer > getAddedMetabolites ( ) { } public void setAddedMetabolites ( ArrayList < Integer > addedMetabolites ) { } public ArrayList < String > getAddedMetaboliteAbbr ( ) { } public void setAddedMetaboliteAbbr ( ArrayList < String > addedMetaboliteAbbr ) { } public int getTableCopyIndex ( ) { } public void setTableCopyIndex ( int tableCopyIndex ) { } public ArrayList < String > getOldMetaColumnNames ( ) { } public void setOldMetaColumnNames ( ArrayList < String > oldMetaColumnNames ) { } public ArrayList < String > getNewMetaColumnNames ( ) { } public void setNewMetaColumnNames ( ArrayList < String > newMetaColumnNames ) { } public String getColumnName ( ) { } public void setColumnName ( String columnName ) { } public SBMLReactionEquation getEqun ( ) { } public void setEqun ( SBMLReactionEquation equn ) { } public int getMaxMetab ( ) { } public void setMaxMetab ( int maxMetab ) { } public int getMaxMetabId ( ) { } public void setMaxMetabId ( int maxMetabId ) { } public ArrayList < String > getPasteIds ( ) { } public void setPasteIds ( ArrayList < String > pasteIds ) { } public String getOldLowerBound ( ) { } public void setOldLowerBound ( String oldLowerBound ) { } public String getNewLowerBound ( ) { } public void setNewLowerBound ( String newLowerBound ) { } public String getOldUpperBound ( ) { } public void setOldUpperBound ( String oldUpperBound ) { } public String getNewUpperBound ( ) { } public void setNewUpperBound ( String newUpperBound ) { } public Map < String , Object > getOldMetaboliteUsedMap ( ) { } public void setOldMetaboliteUsedMap ( Map < String , Object > oldMetaboliteUsedMap ) { } public Map < String , Object > getNewMetaboliteUsedMap ( ) { } public void setNewMetaboliteUsedMap ( Map < String , Object > newMetaboliteUsedMap ) { } public ArrayList < Integer > getDeleteIds ( ) { } public void setDeleteIds ( ArrayList < Integer > deleteIds ) { } public String createUndoDescription ( ) { String undoDescription = "" ; if ( this . undoType . equals ( TYPING ) ) { undoDescription = ( ( ( ( ( ( UndoConstants . TYPING ) + "'" ) + ( this . newValue ) ) + "'<seq2seq4repair_space>in<seq2seq4repair_space>'" ) + ( this . columnName ) ) + "'<seq2seq4repair_space>row<seq2seq4repair_space>" ) + ( ( this . row ) + 1 ) ; } else if ( this . undoType . equals ( REPLACE ) ) { undoDescription = UndoConstants . REPLACE ; } else if ( this . undoType . equals ( REPLACE_ALL ) ) { undoDescription = UndoConstants . REPLACE_ALL ; } else if ( this . undoType . equals ( ADD_ROW ) ) { undoDescription = UndoConstants . ADD_ROW ; } else if ( this . undoType . equals ( ADD_ROWS ) ) { undoDescription = UndoConstants . ADD_ROWS ; } else if ( this . undoType . equals ( ADD_COLUMN ) ) { undoDescription = ( ( UndoConstants . ADD_COLUMN_PREFIX ) + ( displayReactionsColumnNameFromIndex ( this . addedColumnIndex , this . newMetaColumnNames ) ) ) + ( UndoConstants . ADD_COLUMN_SUFFIX ) ; } else if ( this . undoType . equals ( DELETE_ROW ) ) { undoDescription = UndoConstants . DELETE_ROW ; } else if ( this . undoType . equals ( DELETE_COLUMN ) ) { <START_BUG> undoDescription = ( ( UndoConstants . DELETE_COLUMN_PREFIX ) + ( displayReactionsColumnNameFromIndex ( ( ( this . deletedColumnIndex ) + 1 ) , this . oldMetaColumnNames ) ) ) + ( UndoConstants . DELETE_COLUMN_SUFFIX ) ; <END_BUG> } else if ( this . undoType . equals ( PASTE ) ) { undoDescription = UndoConstants . PASTE ; } else if ( this . undoType . equals ( CLEAR_CONTENTS ) ) { undoDescription = UndoConstants . CLEAR_CONTENTS ; } else if ( this . undoType . equals ( SORT ) ) { undoDescription = UndoConstants . SORT ; } else if ( this . undoType . equals ( UNSORT ) ) { undoDescription = UndoConstants . UNSORT ; } return undoDescription + ( UndoConstants . REACTION_UNDO_SUFFIX ) ; } public void undo ( ) { } public void copyTableUndoAction ( ) { } public void redo ( ) { } public void copyTableRedoAction ( ) { } public boolean undoEntry ( ) { } public boolean undoAddRow ( ) { } public void undoAddColumn ( ) { } public void undoDeleteColumn ( ) { } public boolean redoEntry ( ) { } public void redoAddRow ( ) { } public void redoAddColumn ( ) { } public void redoDeleteColumn ( ) { } public static String tableCopySuffix ( int count ) { } public String displayReactionsColumnNameFromIndex ( int columnIndex , ArrayList < String > metaColumnNames ) { } @ SuppressWarnings ( "unchecked" ) public void restoreOldCollections ( ) { } @ SuppressWarnings ( "unchecked" ) public void restoreNewCollections ( ) { } public String toString ( ) { } public String toRedoString ( ) { } @ SuppressWarnings ( "rawtypes" ) public static Object getKeyFromValue ( Map hm , Object value ) { } public static void updateCellById ( String value , int id , int col ) { } public void pasteReplaceAllAction ( ) { }

Fix:
undoDescription = ( ( UndoConstants . DELETE_COLUMN_PREFIX ) + ( displayReactionsColumnNameFromIndex ( this . deletedColumnIndex , this . oldMetaColumnNames ) ) ) + ( UndoConstants . DELETE_COLUMN_SUFFIX ) ;